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Search Publications

NIST Authors in Bold

Displaying 43426 - 43450 of 73697

Techniques for System and Data Recovery

April 1, 2002
Author(s)
William E. Burr, Joan Hash
The key asset in Federal agencies today is the information and data used to implement, sustain and maintain critical government programs and operations. Current efforts in ensuring that the United States can recover and restore activities which have great

The Bogoliubov Approach to Number Squeezing of Atoms in an Optical Lattice

April 1, 2002
Author(s)
K Burnett, M Edwards, Charles W. Clark, M Shotter
We describe an approach for finding the number squeezing for arrays of atoms in an optical lattice. It is based on a straightforward extension of the Bogoliubov method. We discuss the conditions for optimizing squeezing and how to predict what will be

The Tenth Text Retrieval Conference, TREC- 2001

April 1, 2002
Author(s)
Ellen M. Voorhees, Donna K. Harman
TREC 2001 is the latest in a series of workshops designed to foster research in information retrieval and related tasks. This year's conference consisted of six different tasks, including a new task on content-based retrieval of digital video. The overview

The TREC-2001 Filtering Track Report

April 1, 2002
Author(s)
S E. Robertson, Ian Soboroff
The TREC-10 filtering track measures the ability of systems to build persistent user profiles which successfully separate relevant and non-relevant documents. It consists of three major subtasks: adaptive filtering, batch filtering, and routing. In

Thermomechanical Effects in Embedded Passive Materials

April 1, 2002
Author(s)
Andrew J. Slifka, Elizabeth S. Drexler
Thermomechanical fatigue was measured using electron-beam moire (EBM) and infrared (IR) microscopy. A specimen was made using FR-4 printed wiring board, (PWB), a silver-filled conductive adhesive, and a carbon-filled conductive paste. Both filled polymeric

Timing Studies of Real-Time Linux for Control

April 1, 2002
Author(s)
Frederick M. Proctor, William P. Shackleford
Linux is being used increasingly for real-time control of industrial equipment. Versions of Linux adapted to support deterministic task execution are freely available. The resolution of task timing is much higher than for typical user-level processes, on

Transpinnor: A New Giant Magnetoresistive Spin-Valve Device

April 1, 2002
Author(s)
E J. Torok, S Zurn, S Bae, P J. Chen, William F. Egelhoff Jr., L Sheppard, R Spitzer, J Judy
This paper discusses the fundamental physics and device-operating mechanisms of Transpinnor, a kind of multi-functional active solid state device, newly designed by Integrated magnetoelectronics corporation (IME). The Transpinnor is the modified Wheatstone

TREC-2001 Interactive Track Report

April 1, 2002
Author(s)
William Hersh, Paul D. Over
In the TREC 2001 Interactive Track six research teams carried out observational studies which increased the realism of the searching by allowing the use of data and search systems/tools publicly accessible via the Internet. To the extent possible

A New Analytical Model of Shared Backup Path Provisioning in GMPLS Networks

March 31, 2002
Author(s)
San-Nan K. Lee, David W. Griffith, N-O Song
As GMPLS and its supporting set of protocols develop into a viable control plane for optical networks, an important function that they will need to support will be the protection and restoration function that has been a major feature of legacy optical

Architecting a Simulation and Development Environment for Multi-Robot Teams

March 20, 2002
Author(s)
James S. Albus, Stephen B. Balakirsky, Elena R. Messina
Collaborative multi-robot teams have great potential to add capabilities and minimize risk within the military domain. The composition of these teams may range from multiple copies of the same model to heterogeneous ground, air, and water vehicles

Evaluation of the Computer Fire Model DETACT-QS

March 20, 2002
Author(s)
Morgan J. Hurley, Daniel M. Madrzykowski
The proper use of engineering design methods requires an understanding of their applicability and limitations, since all design methods are, at least to a certain extent, empirically based. Equations or constants used within design methods are frequently

Model of Electrochemical Double Layer" Using the Phase Field Method

March 20, 2002
Author(s)
William J. Boettinger, Geoffrey B. McFadden, James A. Warren, Jonathan E. Guyer
We present the first application of phase field modeling to electrochemistry. A free energy functional that includes the electrostatic effect of charged particles leads to rich interactions between concentration, electrostatic potential, and phase

Identification and Characterization of a Human DNA Glycosylase for Repair of Modified Bases in Oxidatively Damaged DNA

March 19, 2002
Author(s)
T. K. Hazra, T. Izumi, I Boldough, B Imhoff, Y W. Kow, Pawel Jaruga, Miral M. Dizdar, Somenath Mitra
8-oxoguanine (8-oxoG), ring-opened purines (formamidopyrimidines or Fapys), and other oxidized DNA base lesions generated by reactive oxygen species, are often mutagenic and toxic, and have been implicated in the etiology of many diseases including cancer

Immobilization of DNA Hydrogel Plugs in Microfluidic Channels

March 15, 2002
Author(s)
K G. Olsen, David J. Ross, Michael J. Tarlov
Acrylamide-modified DNA probes are immobilized in polycarbonate microfluidic channels via photopolymerization in a polyacrylamide matrix. The resulting polymeric, hydrogel plugs are porous under electrophoretic conditions and hybridize with fluorescently

User-Centered Evaluations of Ubicomp Applications

March 12, 2002
Author(s)
Jean C. Scholtz, L Arnstein, M Kim, T Kindberg, Sunny Consolvo
This paper describes some properties of ubiquitous computing applications that warrant user-centered evaluation and describes a number of approaches carried out in recent studies.
Displaying 43426 - 43450 of 73697
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